900909915 has 24 divisors (see below), whose sum is σ = 1465564464. Its totient is φ = 472579200.

The previous prime is 900909869. The next prime is 900909979. The reversal of 900909915 is 519909009.

It is not a de Polignac number, because 900909915 - 2⁷ = 900909787 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47745 + ... + 63885.

It is an arithmetic number, because the mean of its divisors is an integer number (61065186).

Almost surely, 2^900909915 is an apocalyptic number.

900909915 is a deficient number, since it is larger than the sum of its proper divisors (564654549).

900909915 is a wasteful number, since it uses less digits than its factorization.

900909915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16271 (or 16210 counting only the distinct ones).

The product of its (nonzero) digits is 32805, while the sum is 42.

The square root of 900909915 is about 30015.1614188563. The cubic root of 900909915 is about 965.8146503003.

The spelling of 900909915 in words is "nine hundred million, nine hundred nine thousand, nine hundred fifteen".